ARM: tegra: support T33 SKU of Tegra30

Make U-Boot aware of the T33 SKU of Tegra30, and treat it identically
to any other Tegra30.

An alternative would be to simply remove the SKU checking from
tegra_get_chip_type(); most use of the value most likely simply wants
to know the current chip, not the specific SKU. Or, the function could
be split into separate tegra_get_chip() and tegra_get_sku() for the
cases where differentiation really is required.

I wonder whether tegra_get_chip_type() should printf() whenever any
unkown chip/SKU is found, although perhaps the function is called so
early that the printf() wouldn't actually make it to the UART anyway.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>

arch/arm/cpu/tegra-common/ap.c

@@ -65,6 +65,7 @@ int tegra_get_chip_type(void)
 		break;
 	case CHIPID_TEGRA30:
 		switch (tegra_sku_id) {
+		case SKU_ID_T33:
 		case SKU_ID_T30:
 			return TEGRA_SOC_T30;
 		}

arch/arm/include/asm/arch-tegra/tegra.h

@@ -78,6 +78,7 @@ enum {
 	SKU_ID_T25		= 0x18,
 	SKU_ID_AP25E		= 0x1b,
 	SKU_ID_T25E		= 0x1c,
+	SKU_ID_T33		= 0x80,
 	SKU_ID_T30		= 0x81, /* Cardhu value */
 	SKU_ID_T114_ENG		= 0x00, /* Dalmore value, unfused */
 };